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Message-ID: <20190915152722.8240-4-sameehj@amazon.com>
Date: Sun, 15 Sep 2019 18:27:20 +0300
From: <sameehj@...zon.com>
To: <davem@...emloft.net>, <netdev@...r.kernel.org>
CC: Sameeh Jubran <sameehj@...zon.com>, <dwmw@...zon.com>,
<zorik@...zon.com>, <matua@...zon.com>, <saeedb@...zon.com>,
<msw@...zon.com>, <aliguori@...zon.com>, <nafea@...zon.com>,
<gtzalik@...zon.com>, <netanel@...zon.com>, <alisaidi@...zon.com>,
<benh@...zon.com>, <akiyano@...zon.com>
Subject: [PATCH V1 net-next 3/5] make ethtool -l show correct max number of queues
From: Sameeh Jubran <sameehj@...zon.com>
- Update ena_ethtool:ena_get_channels() to return adapter->max_io_queues
so that ethtool -l returns the correct maximum queue number.
- Change the name of ena_calc_io_queue_num() to
ena_calc_max_io_queue_num() as it returns the maximum number of io
queues and actual number of queues can be smaller if changed
by ethtool -L which is implemented in a later commit.
- Change variable name from io_queue_num to max_num_io_queues in
ena_calc_max_io_queue_num() and ena_probe().
- Make all types of variables that convey the number and sizeof queues
to be u32, for consistency with the API between the driver and the
device.
Signed-off-by: Arthur Kiyanovski <akiyano@...zon.com>
Signed-off-by: Sameeh Jubran <sameehj@...zon.com>
---
drivers/net/ethernet/amazon/ena/ena_ethtool.c | 4 +-
drivers/net/ethernet/amazon/ena/ena_netdev.c | 41 ++++++++++---------
drivers/net/ethernet/amazon/ena/ena_netdev.h | 11 ++---
3 files changed, 30 insertions(+), 26 deletions(-)
diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
index 3ad661fd9..c9d760465 100644
--- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
+++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
@@ -734,8 +734,8 @@ static void ena_get_channels(struct net_device *netdev,
{
struct ena_adapter *adapter = netdev_priv(netdev);
- channels->max_rx = adapter->num_io_queues;
- channels->max_tx = adapter->num_io_queues;
+ channels->max_rx = adapter->max_num_io_queues;
+ channels->max_tx = adapter->max_num_io_queues;
channels->max_other = 0;
channels->max_combined = 0;
channels->rx_count = adapter->num_io_queues;
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index b7cd80c5f..a98422667 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -3143,16 +3143,16 @@ static void ena_timer_service(struct timer_list *t)
mod_timer(&adapter->timer_service, jiffies + HZ);
}
-static int ena_calc_io_queue_num(struct pci_dev *pdev,
- struct ena_com_dev *ena_dev,
- struct ena_com_dev_get_features_ctx *get_feat_ctx)
+static int ena_calc_max_io_queue_num(struct pci_dev *pdev,
+ struct ena_com_dev *ena_dev,
+ struct ena_com_dev_get_features_ctx *get_feat_ctx)
{
- int io_tx_sq_num, io_tx_cq_num, io_rx_num, io_queue_num;
+ int io_tx_sq_num, io_tx_cq_num, io_rx_num, max_num_io_queues;
if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) {
struct ena_admin_queue_ext_feature_fields *max_queue_ext =
&get_feat_ctx->max_queue_ext.max_queue_ext;
- io_rx_num = min_t(int, max_queue_ext->max_rx_sq_num,
+ io_rx_num = min_t(u32, max_queue_ext->max_rx_sq_num,
max_queue_ext->max_rx_cq_num);
io_tx_sq_num = max_queue_ext->max_tx_sq_num;
@@ -3162,25 +3162,25 @@ static int ena_calc_io_queue_num(struct pci_dev *pdev,
&get_feat_ctx->max_queues;
io_tx_sq_num = max_queues->max_sq_num;
io_tx_cq_num = max_queues->max_cq_num;
- io_rx_num = min_t(int, io_tx_sq_num, io_tx_cq_num);
+ io_rx_num = min_t(u32, io_tx_sq_num, io_tx_cq_num);
}
/* In case of LLQ use the llq fields for the tx SQ/CQ */
if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
io_tx_sq_num = get_feat_ctx->llq.max_llq_num;
- io_queue_num = min_t(int, num_online_cpus(), ENA_MAX_NUM_IO_QUEUES);
- io_queue_num = min_t(int, io_queue_num, io_rx_num);
- io_queue_num = min_t(int, io_queue_num, io_tx_sq_num);
- io_queue_num = min_t(int, io_queue_num, io_tx_cq_num);
+ max_num_io_queues = min_t(u32, num_online_cpus(), ENA_MAX_NUM_IO_QUEUES);
+ max_num_io_queues = min_t(u32, max_num_io_queues, io_rx_num);
+ max_num_io_queues = min_t(u32, max_num_io_queues, io_tx_sq_num);
+ max_num_io_queues = min_t(u32, max_num_io_queues, io_tx_cq_num);
/* 1 IRQ for for mgmnt and 1 IRQs for each IO direction */
- io_queue_num = min_t(int, io_queue_num, pci_msix_vec_count(pdev) - 1);
- if (unlikely(!io_queue_num)) {
+ max_num_io_queues = min_t(u32, max_num_io_queues, pci_msix_vec_count(pdev) - 1);
+ if (unlikely(!max_num_io_queues)) {
dev_err(&pdev->dev, "The device doesn't have io queues\n");
return -EFAULT;
}
- return io_queue_num;
+ return max_num_io_queues;
}
static int ena_set_queues_placement_policy(struct pci_dev *pdev,
@@ -3438,11 +3438,12 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct ena_llq_configurations llq_config;
struct ena_com_dev *ena_dev = NULL;
struct ena_adapter *adapter;
- int io_queue_num, bars, rc;
struct net_device *netdev;
static int adapters_found;
+ u32 max_num_io_queues;
char *queue_type_str;
bool wd_state;
+ int bars, rc;
dev_dbg(&pdev->dev, "%s\n", __func__);
@@ -3508,15 +3509,15 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
ena_dev->intr_moder_tx_interval = ENA_INTR_INITIAL_TX_INTERVAL_USECS;
ena_dev->intr_moder_rx_interval = ENA_INTR_INITIAL_RX_INTERVAL_USECS;
ena_dev->intr_delay_resolution = ENA_DEFAULT_INTR_DELAY_RESOLUTION;
- io_queue_num = ena_calc_io_queue_num(pdev, ena_dev, &get_feat_ctx);
+ max_num_io_queues = ena_calc_max_io_queue_num(pdev, ena_dev, &get_feat_ctx);
rc = ena_calc_io_queue_size(&calc_queue_ctx);
- if (rc || io_queue_num <= 0) {
+ if (rc || !max_num_io_queues) {
rc = -EFAULT;
goto err_device_destroy;
}
/* dev zeroed in init_etherdev */
- netdev = alloc_etherdev_mq(sizeof(struct ena_adapter), io_queue_num);
+ netdev = alloc_etherdev_mq(sizeof(struct ena_adapter), max_num_io_queues);
if (!netdev) {
dev_err(&pdev->dev, "alloc_etherdev_mq failed\n");
rc = -ENOMEM;
@@ -3544,7 +3545,9 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
adapter->max_tx_sgl_size = calc_queue_ctx.max_tx_sgl_size;
adapter->max_rx_sgl_size = calc_queue_ctx.max_rx_sgl_size;
- adapter->num_io_queues = io_queue_num;
+ adapter->num_io_queues = max_num_io_queues;
+ adapter->max_num_io_queues = max_num_io_queues;
+
adapter->last_monitored_tx_qid = 0;
adapter->rx_copybreak = ENA_DEFAULT_RX_COPYBREAK;
@@ -3612,7 +3615,7 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dev_info(&pdev->dev,
"%s found at mem %lx, mac addr %pM Queues %d, Placement policy: %s\n",
DEVICE_NAME, (long)pci_resource_start(pdev, 0),
- netdev->dev_addr, io_queue_num, queue_type_str);
+ netdev->dev_addr, max_num_io_queues, queue_type_str);
set_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags);
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h
index 7e8e51e32..7499afb58 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.h
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h
@@ -161,10 +161,10 @@ struct ena_calc_queue_size_ctx {
struct ena_com_dev_get_features_ctx *get_feat_ctx;
struct ena_com_dev *ena_dev;
struct pci_dev *pdev;
- u16 tx_queue_size;
- u16 rx_queue_size;
- u16 max_tx_queue_size;
- u16 max_rx_queue_size;
+ u32 tx_queue_size;
+ u32 rx_queue_size;
+ u32 max_tx_queue_size;
+ u32 max_rx_queue_size;
u16 max_tx_sgl_size;
u16 max_rx_sgl_size;
};
@@ -324,7 +324,8 @@ struct ena_adapter {
u32 rx_copybreak;
u32 max_mtu;
- int num_io_queues;
+ u32 num_io_queues;
+ u32 max_num_io_queues;
int msix_vecs;
--
2.17.1
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